Abstract
The effects of CO2 laser were verified on rat dorsal skin. The specimens were treated by light and scanning electron microscope. The results showed that after CO2 laser irradiation a carbonized material layer is formed. The scab was removed at 3rd day evidencing the neoformed epithelial cells. The subjacent connective tissue showed imature collagen fibers bundles, with numerous polymorphonuclear leucocytes and fibroblasts. Both light and SEM aspects revealed that at 7 to 10 days can be observed a defined layer of epithelial cells. In the last period examined can be observed descamation of some epithelial cells.
